Formation of plasma around a small meteoroid: 1. Kinetic theory
| Autor: | Meers Oppenheim, Ya. S. Dimant |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Physics
010504 meteorology & atmospheric sciences Meteoroid FOS: Physical sciences Plasma 01 natural sciences Physics - Plasma Physics Physics::Geophysics Plasma Physics (physics.plasm-ph) Geophysics 13. Climate action Space and Planetary Science Ionization Physics::Space Physics 0103 physical sciences Kinetic theory of gases Astrophysics::Earth and Planetary Astrophysics Atomic physics 010303 astronomy & astrophysics Physics::Atmospheric and Oceanic Physics 0105 earth and related environmental sciences |
| Zdroj: | Journal of Geophysical Research: Space Physics. 122:4669-4696 |
| ISSN: | 2169-9402 2169-9380 |
| DOI: | 10.1002/2017ja023960 |
| Popis: | Every second millions of small meteoroids enter the Earth's atmosphere producing dense plasmas. Radars easily detect these plasmas and researchers use this data to characterize both the meteoroids and the atmosphere. This paper develops a first-principle kinetic theory describing the behavior of particles, ablated from a fast-moving meteoroid, that colliside with the atmospheric molecules. This theory produces analytic expressions describing the spatial structure and velocity distributions of ions and neutrals near the ablating meteoroid. This analytical model will serve as a basis for a more accurate quantitative interpretation of radar measurements and should help calculate meteoroid and atmosphere parameters from radar head-echo observations. 35 pages, 10 figures |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Plný text